High-strength and high-damping Ti3Sn/TiNi memory alloy composite material

A composite material and memory alloy technology, which is applied in the field of high-strength and high-damping Ti3Sn/TiNi memory alloy composite materials and memory alloy composite materials, can solve the problems of limited use and low strength of high-damping materials, and achieve high interface bonding strength, The effect of excellent damping performance, excellent strength and plasticity

Inactive Publication Date: 2012-02-22
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high damping materials often have low strength, which seriously limits their use as engineering

Method used

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  • High-strength and high-damping Ti3Sn/TiNi memory alloy composite material
  • High-strength and high-damping Ti3Sn/TiNi memory alloy composite material
  • High-strength and high-damping Ti3Sn/TiNi memory alloy composite material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0038] Ti provided by the invention 3 The preparation method of Sn / TiNi memory alloy composite material may include the following specific steps:

[0039] (1), press Ti 3 The composition ratio of the Sn / TiNi memory alloy composite material is selected from tin with a purity of 99wt.% or more (preferably 99.9wt.%), titanium with a purity of 99wt.% or more (preferably 99.9wt.%), and a purity of 99wt.% Above (preferably 99.9wt.%) nickel;

[0040] (2) Put the above composite material components into a smelting furnace and smelt to obtain Ti 3 Sn / TiNi memory alloy composite material and cast it into an ingot;

[0041] (3) In a vacuum furnace, homogenize the ingot at 800-1050°C (preferably 950°C) for 5-60h (preferably 10h);

[0042] (4) The annealed ingot is cold rolled, and annealed at 800-1050°C (preferably 950°C) for multiple times to obtain a plate.

Example Embodiment

[0043] Example 1Ti 57 Ni 35 Sn 8 Memory alloy composite

[0044] This embodiment provides a Ti 57 Ni 35 Sn 8 The memory alloy composite material is prepared through the following steps:

[0045] (1) According to Sn content 8at.%, Ti and Ni atomic ratio 57:35, select tin with purity of 99.9wt.%, titanium with purity of 99.9wt.% and nickel with purity of 99.9wt.%, Among them, the sum of atomic percentages of Sn, Ti and Ni is 100%;

[0046] (2) Put the above alloy components into a vacuum melting furnace and smelt them into ingots under the protection of -0.5MPa argon;

[0047] (3) In the vacuum furnace, the smelted ingot is subjected to homogenization annealing at 950°C for 10 hours;

[0048] (4) Cold-roll the annealed ingots, and anneal them at 950℃ for several times to obtain a plate, namely Ti 57 Ni 35 Sn 8 Memory alloy composite material.

[0049] Cut a 2mm thick, 20mm long, and 10mm wide piece from the homogenized and annealed ingot obtained in step (3), and observe the microstructur...

Example Embodiment

[0055] Example 2Ti 69 Ni 11 Sn 20 Memory alloy composite

[0056] This embodiment provides a Ti 69 Ni 11 Sn 20 The memory alloy composite material is prepared by the following steps:

[0057] (1) According to Sn content 20at.%, Ti and Ni atomic ratio 69:11, select tin with purity of 99.9wt.%, titanium with purity of 99.9wt.% and nickel with purity of 99.9wt.%, Among them, the sum of atomic percentages of Sn, Ti and Ni is 100%;

[0058] (2) Put the above alloy components in a melting furnace, smelt and cast into ingots under the protection of -0.5MPa argon;

[0059] (3) In a vacuum furnace, the ingot is subjected to homogenization annealing at 950°C for 10 hours to obtain Ti 69 Ni 11 Sn 20 Memory alloy composite material.

[0060] Cut a 2mm thick, 20mm long, and 10mm wide piece from the homogenized and annealed ingot obtained in step (3), and observe the microstructure with a scanning electron microscope. The microstructure is as figure 2 As shown, the composite material consists of th...

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Abstract

The present invention relates to a novel high-strength and high-damping Ti3Sn/TiNi memory alloy composite material. The Ti3Sn/TiNi memory alloy composite material comprises a Ti element, a Sn element and a Ni element, wherein an atomic ratio of the three elements is (0.25x+y):0.25x:(100-y-0.5x), x comprises one selected from 16-84, y comprises one selected from 45.333-53.818. The memory alloy composite material of the present invention has unique functions of high strength, high plasticity, high strain strengthening, unobvious yielding, low frequency internal friction, high frequency acoustic attenuation and the like. The present invention further provides a preparation method for the Ti3Sn/TiNi memory alloy composite material. The preparation method comprises the following steps: selecting elementary substances of tin, titanium and nickel according to the component ratio of the Ti3Sn/TiNi memory alloy composite material, wherein the purities of the three elementary substances are more than 99 wt.%; placing the three elementary substances to a melting furnace with the vacuum degree more than 10<-1> Pa or under the protection of inert gas to carry out melting to obtain the Ti3Sn/TiNi memory alloy composite material.

Description

technical field [0001] The invention relates to a memory alloy composite material, in particular to a high-strength and high-damping Ti 3 A Sn / TiNi memory alloy composite material belongs to the field of metal composite materials. Background technique [0002] With the development of modern industry and transportation, noise pollution caused by vibration has gradually become one of the serious environmental problems. In daily life, this kind of vibration and noise will affect people's life and work, endanger the health of the human body, make people tired, tinnitus, and even lose the ability to work in severe cases. In engineering, the wide-band random excitation caused by vibration and noise will cause the multi-formant response of the structure, and will directly affect the normal operation of electronic devices, instruments and meters, causing catastrophic consequences in severe cases. In the military, due to the increasingly high-speed and high-power development of wea...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C1/02C22F1/18
Inventor 崔立山张俊松杜敏疏姜大强王珊郑雁军
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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